Revisiting Stepp’s method for the completeness of regional seismic catalogues

IF 1.6 4区 地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS Journal of Seismology Pub Date : 2024-07-18 DOI:10.1007/s10950-024-10231-6
Narsiram Gurjar, Dhiman Basu
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Abstract

An important step in seismic hazard analysis is investigating the completeness of available data. Out of the various methods proposed by several researchers, Stepp’s method is one of the most commonly used methods for completeness analysis. Some drawbacks are identified in this method, which results in erroneous estimation of the completeness period. This paper suggests another way of estimation based on the 2-point moving average of the mean annual rate of occurrence of events. The new procedure is able to overcome the problems identified in Stepp’s method and is validated using five catalogues from different regions. The analysis result includes the completeness period determination for different catalogues before and after correction, together with Magnitude-Frequency recurrence relation coefficients compared with Stepp’s method.

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重新审视斯泰普的区域地震目录完整性方法
地震灾害分析的一个重要步骤是调查可用数据的完整性。在一些研究人员提出的各种方法中,Stepp 方法是最常用的完备性分析方法之一。这种方法存在一些缺点,导致对完整性周期的估计错误。本文提出了另一种基于事件平均年发生率两点移动平均值的估算方法。新程序能够克服 Stepp 方法中发现的问题,并使用来自不同地区的五个星表进行了验证。分析结果包括校正前后不同星表的完整周期测定,以及与 Stepp 方法相比较的震级-频率重现关系系数。
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来源期刊
Journal of Seismology
Journal of Seismology 地学-地球化学与地球物理
CiteScore
3.30
自引率
6.20%
发文量
67
审稿时长
3 months
期刊介绍: Journal of Seismology is an international journal specialising in all observational and theoretical aspects related to earthquake occurrence. Research topics may cover: seismotectonics, seismicity, historical seismicity, seismic source physics, strong ground motion studies, seismic hazard or risk, engineering seismology, physics of fault systems, triggered and induced seismicity, mining seismology, volcano seismology, earthquake prediction, structural investigations ranging from local to regional and global studies with a particular focus on passive experiments.
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